Great Plains NP4000 40-foot Operator Manual - Manual (Page 59)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 55
2012-03-28 Table of Contents Index 407-776M
Tool Bar Height Adjustment
Center section tool bar height is set by the tractor hitch.
Lift-assist spacers (page 26) must be selected and in
place to assure front-to-back level.
Wing end tool bar height is set by independent gauge
wheels on each wing end. Wings are maintained at level
in the field with the weight-transfer system (page 56).
1. Move to smooth level ground with soil as similar as
possible to field conditions. Set tractor brakes.
2. Determine the desired coulter depth.
3. Unfold the implement (page 37).
4. Raise the implement to bring the wing coulters off
the ground, and the wings slightly above level.
Refer to Figure 35
5.
At the each gauge wheel, use the crank to remove
tension at the pin . Remove the pin.
6. Use the crank to extend the wheels far enough to
keep the wing coulters off the ground.
7. Unfold the wings until the gauge wheels are on the
ground. Set lift/fold circuit to Float.
8. Use the 2-point hitch to lower the implement until the
center section coulters are just at ground level.
9. Check frame front-to-back level and adjust spacers
(page 26) as necessary.
10. Adjust the gauge wheel heights to bring the wing
coulters to the same height as the center section
(just above the ground).
11. Measure the length of exposed gauge wheel tube.
12. Crank the wheel up by the desired coulter depth
(exposed tube length becomes length minus the
coulter depth). Capture this setting by re-inserting
and securing the pin
.
13. Crank the wheel up until the tube solidly contacts the
pin. This transfers wheel loads to the pin, and not to
the crank.
14. At the center section, measure the tool bar height
above the ground. Operating height is this distance
less the desired coulter depth.
15. Pull forward, lowering the 2-point hitch to operating
height. Set a stop on the 2-point circuit to capture
this height.
16. Adjust weight-transfer (page 56) to hold wings level
at this coulter height for these field conditions.
Equipment Damage Risk:
Use the pin
. Crank the tube up against the pin. Wheel loads
transmitted to the crank can damage the crank.
Note: Turn crank clockwise to raise implement (lower
wheel), and counterclockwise to lower implement
(raise wheel).
Note: At maximum height, the coulters are off the
ground. This configuration is useful for unfolded
parking, storage and service.
Make a record of the setting needed for coulter
depth prior to setting for maximum.
Figure 35
Gauge Wheel Adjustment
32354
2
3
2
1
1
2
Note: Prior to folding, fold the jack handle down
alongside the jack body. This retains the jack
handle and prevents it from hitting the fertilizer
tanks when folded (if so equipped).
Figure 36
Jack Handle Adjustment
32170
3
3
2